Polar Image Transformations

Functions
I32	polar_image_transform (image *src, image *dst, F32 t[2], U32 r0, U8 bgnd)
	Subpixel Interpolated Polar to Cartesian Image Transformation, Integer Version. More...
I32	polar_image_transform2 (image *src, image *dst, F32 t[2], F32 r0, U8 bgnd)
	Subpixel Interpolated Polar to Cartesian Image Transformation, float Version. More...

Detailed Description

Function Documentation

polar_image_transform()

I32 polar_image_transform	(	image *	src,
		image *	dst,
		float	t[2],
		U32	r0,
		U8	bgnd
	)

This function calculates a bilinear interpolated transformation from polar coordinates into cartesian coordinates (Integer Version).

Parameters

[in]	src	Points to Source Image.
[out]	dst	Points to Destination Image.
[in]	t	Inverse 2D Translation Vector.
[in]	r0	Minimum Radius for Transform.
[in]	bgnd	Background Grey Value.

This function may be used to unwrap circular barcode or characters written e.g. on a CD-ROM or wafer.

Memory Consumption

None.

See also

affine_image_transform().

Return values

ERR_FORMAT	if src or dst is NULL.
ERR_NONE	on Success.

polar_image_transform2()

I32 polar_image_transform2	(	image *	src,
		image *	dst,
		float	t[2],
		float	r0,
		U8	bgnd
	)

This function calculates a bilinear interpolated transformation from polar coordinates into cartesian coordinates (float Version).

Parameters

[in]	src	Points to Source Image.
[out]	dst	Points to Destination Image.
[in]	t	Inverse 2D Translation Vector.
[in]	r0	Minimum Radius for Transform.
[in]	bgnd	Background Grey Value.

This function may be used to unwrap circular barcode or characters written e.g. on a CD-ROM or wafer.

See also

affine_image_transform().

Return values

ERR_FORMAT	if src or dst is NULL.
ERR_NONE	on Success.